Inductive cold crucible melting

Hukin and Jones (1976) zone refined Tb and observed that O, N and C moved in the direction opposite to the molten zone. They obtained significant purification with respect to these interstitial impurities as well as the metallic impurities. The zone melting was done under an atmosphere of pure argon in a horizontal cold crucible with induction heating. 

In several cases authors have reported growing crystals by the recrystallization technique, but did not state a size for the crystals grown. Whittaker (1%8) prepared rods by a cold-crucible technique in which the samples were levitated and melted by high frequency induction. The rods were then heated by induction to 100°C below their melting point for 8 hours. Grains up to 20 mm in length and 7 mm diameter were prepared. In his studies Whittaker (1%8) noted an inverse relationship between the size of crystals grown by this technique and... 

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